Lens appearance defect automatic detection device

Abstract

The utility model relates to the technical field of lens appearance defect detection, in particular to an automatic lens appearance defect detection device which comprises a detection platform, a lens side edge mapping mechanism arranged on the detection platform, a lens clamping mechanism arranged on the lens side edge mapping mechanism and an optical detection head arranged right above the lens side edge mapping mechanism, the lens side edge mapping mechanism comprises a light ray projection assembly and a top pressing plate, and four shielding sheets are uniformly distributed at the top of the top pressing plate. By arranging the lens side projection mechanism on the detection platform, after an optical detection head applies pressure to a top pressing plate, a gear which is pressed downwards by a sliding plate pushes a second bracket to rotate, and at the moment, a lens clamped by two light blocking clamps can be in a vertical state; and the side edge of the vertical rear lens can be directly irradiated by the uniformly distributed light emitting diodes, and finally, the vertical crack in the lens can generate a shadow area under illumination, so that the vertical crack can be effectively detected by an optical detection head.

Description

TECHNICAL FIELD

[0001] The utility model relates to lens appearance defect detection technical field, concretely is a lens appearance defect automatic detection device. BACKGROUND

[0002] Lens appearance defect detection is mainly a constant standard to lens quality, once lens exists the defect to cause the interference to subsequent processing, and then influence product's quality.

[0003] At present, there are certain drawbacks in the lens detection period of the machine vision detection equipment, the thickness of the irregular oval lens double face has certain difference, therefore, the direct lens surface illumination detection cannot visually determine the internal vertical crack of the lens.

[0004] In view of this, a lens appearance defect automatic detection device is designed to solve the above problems. UTILITY MODEL CONTENTS

[0005] The utility model aims at solving one of the technical problems in prior art or related art.

[0006] Therefore, the utility model adopts the technical scheme that:

[0007] A lens appearance defect automatic detection device, including detection platform, the lens side edge shadowing mechanism setting on the detection platform, the clamping piece mechanism setting on the lens side edge shadowing mechanism and the optical detection head setting on the lens side edge shadowing mechanism directly above, the lens side edge shadowing mechanism includes light projection assembly and top pressure plate, the top of top pressure plate is provided with four shielding pieces of uniform distribution, the clamping piece mechanism includes first support and second support, gear setting on the second support and two light blocking clamps clamping lens, two ends of two light blocking clamps are provided with two groups of stabilizing components, and the outer end of first support is movably installed with a support plate.

[0008] In a preferred example, the utility model can be further configured as: the light projection assembly includes a base provided on the top of the detection platform, two clamping plates provided on the top of the base, a baffle plate installed on the outside of one of the clamping plates, a plurality of light-emitting diodes provided inside the two clamping plates, and a wire row installed at the bottom of the plurality of light-emitting diodes.

[0009] In a preferred example, the utility model can be further configured as: the lens side edge shadowing mechanism further includes a housing provided at one end of the base, a vertical rod fixedly installed inside the outer end plate of the top pressure plate, and the bottom end of the vertical rod is adapted to penetrate into the housing;

[0010] A return spring is provided outside the vertical rod.

[0011] The inner side of the shell is movably provided with a sliding plate, and the top end of the sliding plate is provided in a top pressing plate.

[0012] The sliding plate is internally provided with a rectangular sliding groove, and one side of the rectangular sliding groove is provided with a rack.

[0013] The clamping piece mechanism further comprises a fixing base provided at the other end of the base, and the bottom end of the supporting plate is provided in the fixing base.

[0014] Two clamping heads are provided at the two ends of the bottom of the light blocking clamp, and a traction frame is movably provided on the clamping head.

[0015] The number of the traction frames is four, two of which are movably provided on the inner end of the first support, and the other two are movably provided on the inner end of the second support.

[0016] The stabilizing assembly comprises an outer frame, and two sliding channels are provided in the inner part of the outer frame.

[0017] A horizontal rod is provided in the inner part of the outer frame.

[0018] Two compression springs are provided on the horizontal rod.

[0019] The outer wall of the light blocking clamp is provided with a rectangular notch, and the two ends of the light blocking clamp are provided with rectangular plate blocks, and the rectangular plate blocks are movably provided on the horizontal rod.

[0020] One end of the compression spring is adapted to be supported on the rectangular plate block.

[0021] By adopting the above technical scheme, the utility model has the beneficial effects of:

[0022] 1. The utility model discloses a lens side edge shadowing mechanism arranged on a detection platform, when the optical detection head exerts pressure on the top pressing plate, the gear subjected to the downward pressure of the sliding plate will push the second support to rotate, at this time, the lens clamped by the two light blocking clamps can be in the vertical state, and the side edge of the lens can be directly irradiated by the uniform distribution of the light-emitting diode after being vertical, and finally the vertical crack in the lens can generate a shadow area under the irradiation, so that the optical detection head can effectively detect. DRAWINGS

[0023] Figure 1 It is a schematic view of the utility model for detection.

[0024] Figure 2 It is a three-dimensional schematic view of the utility model.

[0025] Figure 3 This is an exploded view of the lens side projection mechanism of this utility model;

[0026] Figure 4 This is a schematic diagram of the light projection component of this utility model;

[0027] Figure 5 This is an exploded view of the clamping mechanism of this utility model;

[0028] Figure 6 This utility model Figure 5 Enlarged diagram of point A in the middle.

[0029] Figure label:

[0030] 100. Testing platform;

[0031] 200. Lens side projection mechanism; 210. Light projection assembly; 211. Base; 212. Baffle; 213. Clamping plate; 214. Light-emitting diode; 215. Cable strip; 220. Housing; 230. Vertical rod; 240. Return spring; 250. Slide plate; 260. Top pressure plate; 270. Shielding plate;

[0032] 300. Clamping mechanism; 310. Fixed base; 320. Support plate; 330. Light-blocking clamp; 340. Clamp; 350. Stabilizing component; 351. Outer frame; 352. Crossbar; 353. Compression spring; 360. First bracket; 370. Second bracket; 380. Gear; 390. Traction frame;

[0033] 400. Optical detection head. Detailed Implementation

[0034] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings. It should be noted that, unless otherwise specified, the embodiments and features of the present utility model can be combined with each other.

[0035] It should be understood that these descriptions are merely exemplary and are not intended to limit the scope of this invention.

[0036] The following describes, with reference to the accompanying drawings, some embodiments of an automatic lens appearance defect detection device provided by this utility model.

[0037] Example 1:

[0038] Combination Figures 1-6The utility model provides a kind of lens appearance defect automatic detection device shown, including detection platform 100, lens side edge shadowing mechanism 200 being arranged on detection platform 100, clamping piece mechanism 300 being arranged on lens side edge shadowing mechanism 200 and optical detection head 400 being arranged directly above lens side edge shadowing mechanism 200, lens side edge shadowing mechanism 200 is used to cooperate optical detection head 400 to the clamped lens is carried out image capture, clamping piece mechanism 300 is used to provide vertical side turning support platform to clamped lens, and guide light source to the mapping of vertical rear lens interior.

[0039] Lens side edge shadowing mechanism 200 includes light projection assembly 210 and top pressure plate 260, and the top of top pressure plate 260 is provided with four shielding pieces 270 evenly distributed;

[0040] Light projection assembly 210 includes base 211 being arranged on the top of detection platform 100, two clamping plates 213 being arranged on the top of base 211, baffle 212 being installed outside one of clamping plates 213, multiple light-emitting diodes 214 being arranged inside two clamping plates 213 and line row 215 being installed at the bottom of multiple light-emitting diodes 214;

[0041] Clamping piece mechanism 300 includes first support 360 and second support 370, gear 380 being arranged on second support 370 and two light-blocking clamps 330 clamping lens, and two groups of stabilizing assemblies 350 are arranged at the two ends of two light-blocking clamps 330;

[0042] The outer end of first support 360 movably installs support plate 320;

[0043] Fixed seat 310 is arranged at the other end of base 211, and the bottom end of support plate 320 is installed in fixed seat 310;

[0044] Two collets 340 are arranged at the two ends of the bottom of light-blocking clamp 330, and traction frame 390 is movably installed on collet 340;

[0045] The number of traction frame 390 is four, and two traction frames 390 are movably installed on the inner end of first support 360, and the other two traction frames 390 are movably installed on the inner end of second support 370.

[0046] One of light-blocking clamp 330 is stretched outwards in advance, then oval and irregular lens is clamped on the inner side of two light-blocking clamps 330, when the lens is clamped, optical detection head 400 running subsequently will be close to the top of top pressure plate 260, at this time, the end of the bottom of optical detection head 400 will press down top pressure plate 260 under the limit of four shielding pieces 270, and the end of the bottom of optical detection head 400 can carry out front appearance detection to horizontal lens;

[0047] With the uniform descent of the top pressing plate 260 and the sliding plate 250, the gear 380 and the second support 370 pushed by the sliding plate 250 will be pressed to drive the two light blocking clamps 330 to perform vertical side turning, at this time the clamped lens can be effectively blocked by the baffle 212, at this time the multi-specification light emitting diode 214 can be projected into the inside of the lens along the notch arranged at the side of the light blocking clamp 330, when the light source is blocked by the lens crack, the mapped shadow can be effectively captured by the optical detection head 400, so that the defect detection of the internal crack of the lens can be effectively improved.

[0048] Embodiment 2:

[0049] In combination Figures 2-5 As shown in the embodiment 1, on the basis of the embodiment 1, the lens side projection mechanism 200 further comprises a shell 220 arranged at one end of the base 211, a vertical rod 230 fixedly installed in the outer end plate of the top pressing plate 260, and the bottom end of the vertical rod 230 is adapted to penetrate into the shell 220;

[0050] The outer part of the vertical rod 230 is provided with a reset spring 240.

[0051] Preferably, the top end of the vertical rod 230 is fixed in the outer end plate of the top pressing plate 260 by welding, after the optical detection head 400 completes detection and withdraws from the top of the top pressing plate 260, the reset spring 240 arranged outside the vertical rod 230 will provide effective reset thrust for the top pressing plate 260, so as to provide detection preparation for the next lens.

[0052] The inner side of the shell 220 is movably installed with a sliding plate 250, and the top end of the sliding plate 250 is installed in the top pressing plate 260;

[0053] The inside of the sliding plate 250 is provided with a rectangular sliding groove, and one side of the rectangular sliding groove is provided with a rack.

[0054] Preferably, the top end of the shell 220 is provided with a rectangular sleeve structure, the bottom end of the sliding plate 250 is adapted to penetrate into the inside of the rectangular sleeve structure, and the outer end of the second support 370 is movably installed in the slot hole at the top of the shell 220, after the gear 380 is driven by the rack in the sliding plate 250, the first support 360 supported by the support plate 320 will drive the lens to effectively perform vertical side turning.

[0055] Embodiment 3:

[0056] In combination Figure 5 and Figure 6 As shown in the above embodiment, the stability increasing assembly 350 comprises an outer frame 351, and two sliding ways are arranged in the inside of the outer frame 351;

[0057] The inside of the outer frame 351 is provided with a horizontal rod 352;

[0058] Two compression springs 353 are arranged on the horizontal rod 352;

[0059] The outer wall of the light blocking clamp 330 is provided with a rectangular notch, and the two ends of the light blocking clamp 330 are provided with rectangular plates which are movably installed on the horizontal rod 352;

[0060] One end of the compression spring 353 is adapted to bear on the rectangular plate.

[0061] Preferably, the surface of the light blocking clamp 330 is provided with a rubber outer layer, and the rubber outer layer is black. After the two light blocking clamps 330 clamp the lens, the two side edges of the lens can pass through the notches on the outer sides of the two light blocking clamps 330, and after the two light blocking clamps 330 are vertically flipped, the side edges of the lens can be effectively irradiated by the light projected upward by the plurality of light emitting diodes 214. At this time, the optical detection head 400 in the pressed state can capture the image passing through the inside of the lens.

[0062] The working principle and use process of the utility model: lens appearance defect detection is mainly divided into artificial detection, machine vision automatic detection, computer vision detection based on computer vision, intelligent detection equipment and the like, and the device detects whether there is a crack in the inside of the lens based on the optical detection head;

[0063] When the lens is effectively clamped by the two light blocking clamps 330, the two side edges of the lens can be leveled with the notches on the outer sides of the two light blocking clamps 330. In the initial state, the lens clamped by the two light blocking clamps 330 can be parallel to the optical detection head directly below. When the optical detection head 400 descends and is pressed on the top of the top pressing plate 260, the end of the optical detection head 400 constrained by the four shielding pieces 270 can observe the parallel lens.

[0064] With the optical detection head 400 pressing the top pressing plate 260, the sliding plate 250 arranged on the top pressing plate 260 pushes the gear 380 and the second bracket 370 to rotate. At this time, the first bracket 360 can be flipped and rotated along the top end of the support plate 320, until the two light blocking clamps 330 are vertically flipped, the baffle 212 can provide limiting bearing for one of the two light blocking clamps 330. At this time, the side edges of the clamped lens can be irradiated upward by the plurality of light emitting diodes 214. At this time, the light shadow passing through the side edges of the lens and projected upward can be quickly captured by the optical detection head 400.

[0065] Once there is a crack in the inside of the lens, the light shadow passing through the crack will be hindered, and the image captured by the optical detection head 400 will appear a shadow, so that the device can ensure the transmission detection of the crack defect in the inside of the lens.

[0066] Although the embodiments of the utility model have been shown and described, those skilled in the art can understand that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and purposes of the utility model, and the scope of the utility model is defined by the claims and their equivalents.

Claims

1. An apparatus for automatic detection of lens appearance defects, comprising a detection platform (100), characterized in that, Also include the lens side edge shadow mechanism (200) arranged on the detection platform (100), the clamping mechanism (300) arranged on the lens side edge shadow mechanism (200) and the optical detection head (400) arranged directly above the lens side edge shadow mechanism (200); The lens side edge shadow mechanism (200) comprises a light projection assembly (210) and a top pressing plate (260), and the top of the top pressing plate (260) is provided with four evenly distributed shielding pieces (270); The clamping mechanism (300) comprises a first support (360) and a second support (370), a gear (380) arranged on the second support (370), and two light blocking clamps (330) for clamping the lens, and two groups of stability enhancing assemblies (350) are arranged at the two ends of the two light blocking clamps (330); The outer end of the first support (360) is movably mounted with a support plate (320).

2. The apparatus for automatically detecting lens cosmetic defects according to claim 1, wherein The light projection assembly (210) comprises a base (211) arranged on the top of the detection platform (100), two clamping plates (213) arranged on the top of the base (211), a baffle (212) mounted on the outside of one of the clamping plates (213), a plurality of light emitting diodes (214) arranged in the inside of the two clamping plates (213), and a wire row (215) mounted on the bottom of the plurality of light emitting diodes (214).

3. The apparatus for automatically detecting lens cosmetic defects according to claim 1, wherein, The lens side edge shadow mechanism (200) further comprises a housing (220) arranged at one end of the base (211), a vertical rod (230) fixedly mounted in the outer end plate of the top pressing plate (260), and the bottom end of the vertical rod (230) is adapted to penetrate into the housing (220); The outside of the vertical rod (230) is provided with a return spring (240); The inside of the housing (220) is movably mounted with a sliding plate (250), and the top end of the sliding plate (250) is mounted in the top pressing plate (260).

4. The apparatus for automatically detecting lens cosmetic defects according to claim 3, wherein The inside of the sliding plate (250) is provided with a rectangular sliding groove, and one side of the rectangular sliding groove is provided with a rack.

5. The apparatus for automatically detecting lens cosmetic defects according to claim 1, wherein The clamping mechanism (300) further comprises a fixed seat (310) arranged at the other end of the base (211), and the bottom end of the support plate (320) is mounted in the fixed seat (310); The bottom of the light blocking clamp (330) is provided with two collets (340), and the collets (340) are movably mounted with traction frames (390).

6. The apparatus for automatically detecting lens cosmetic defects according to claim 5, wherein, The number of the traction frames (390) is four, two of which are movably mounted on the inner end of the first support (360), and the other two are movably mounted on the inner end of the second support (370).

7. The apparatus for automatically detecting lens cosmetic defects according to claim 1, wherein The stability enhancing assembly (350) comprises an outer frame (351), and two sliding channels are formed in the inside of the outer frame (351); The inside of the outer frame (351) is provided with a horizontal rod (352); Two compression springs (353) are arranged on the horizontal rod (352).

8. The apparatus for automatically detecting lens cosmetic defects according to claim 7, wherein, The outer wall of the light blocking clamp (330) is provided with a rectangular notch, and the two ends of the light blocking clamp (330) are provided with rectangular plate blocks, and the rectangular plate blocks are movably mounted on the horizontal rod (352); One end of the compression spring (353) is adapted to bear on the rectangular plate block.

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